Pump or hydraulic power-transmission machine



Jan. ,8, 1929. 1,697,924

R. Lusso PUMP QR HYDRAULIC POWER TRANSMISSION MACHINE F e ly 1924 2 Sheets-Sheet l 81g. 2

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R. LUSSO PUMP OR HYDRAULIC POWER TRANSMISSION MACHINE File J ly 3, 1924 2 Sheets-Sheet 2 R dQZfOLuJJO.

Patented Jan. 8, 1929.

UNITED STATES PATENT OFFICE.

RODOLFO LUSSO, OF HABANA, CUBA.

PUMP OR HYDRAULIC POWER-TRANSMISSION MACHINE.

- Application filed July 3,

I taken at right angles to that of Fig. 1.

Fig. 3 is a plan view.

Fig. 4 is a detail perspective-view of the four pistons.

Fig. 5 is a detail rotation drum.

Fig. 6 is a detail exterior frame.

Fig. 7 is a -detail perspective view of one of the two covers.

The machine to which this invention relates is composed of an exterior casing a of a generally circular form, provided with two openings, ending respectively In two tubular portions 6 and 0. Inside the casing a fits the drum 03 Figs 1 and 5, also of circular form but of smaller diameter than the experspectivefview of the perspective view of the terior frame, in such a manner that between, i

the drum and the frame is a space 6 on one i side of the periphery ofthe circle, Fig. 1.;

and on the other side the two surfaces of the drum and the frame may fit close together.

Thedrum d is provided with four radially-disposed hollow slots f, Fig. 5 that serve as the receptacles of the same number of pistons or paddles g Figs. 1 and 4, i. e. one paddle in each hollow, so that every paddle can slide radially along the hollows f. Each paddle is provided on its edges with two rollers or ball bearings h fixed at the end of a trough bolt 5. These ball bearings fit in circular grooves 71: of. both covers, so as to positively bring the paddles 1n proper place, when the, drum s inclrcular mot1on. At the centre of the drum (Z is fixed the axle -Z, Figs. 1 and 2. There are two covers m Figs. 2, 3 and 7, fitted to close up hermetically the casing a, forming thus the body of the machine closed inall its parts, with the exception of both tubular apertures band 0 provided for the reception and delivery of the liquids. The casing is held together by bolts n placed around the casing 1924. SerialNo. 724,137.

in holes through caps o and p,Figs. 2, 6

and 7.

' The grooves of both covers are of circula r form as explained, but are eccentrically disposed in regard to the centre of the axle Z,'Fig. 1. 1

The-covers m have each one depression where the ball bearings 1- are located, acting as seats for the rotation of the drum d and thus determinlng the relative position to the frame a.

When the device is used as a pump, power is applied to the shaft Z from some source not shown and the liquid pumped with equal facility ordinary way. I

When the device is used as a turbine the liqu d under hydrostatic pressure, enters one of the tubular apertures b or c at choice,

from I) through 0 or vice versa in the travelin into the free space 6 and meets here one of t e four paddles'that' is intercepting the channel or free space between drum and frame. The pressure of the fluid acting on one side of the paddle compels the drum and the axle, keyed together, to a circular motion. As the liquid persistently enters the .machine, the following paddle.will be compelled the same as the first one, to move and displace it from its position and to perform the circular motion started before; thus obtainmg a constant and regular revolution of terior work.

When the drum (1 makes the circular motion, the paddles are radially slid into the hollows f of the drum, forced, by the ball bearings that follow the way of the grooves on both covers, so that the edges. of the paddles will perform the circle pointed out with a dotted line in Fig. 1

It will be noted from a careful inspection of my device that I have-provided a long surface" contact between the drum and the bot-- tom periphery of the casing, and II have so arranged the grooves in the heads of the casing that the piston 9 will be drawn slightly out of cont-act with the bottom ortion of the casing. The upper ortion 0 the grooves in is circular in shape ut arranged somewhat eccentric on its sides or else the inner periphery of the casing is so shaped that only one of the pistons g is always in cont-act with the inner periphery of the casing. The pistons are' guided and positively operated by the the axle that canv be transmitted to an ex-.

grooves so as to perform the functions above enumerated. I have found that after a slight wear of the parts a film of fluid seems to form between the periphery of the drum and the lower portion of the casing and if contact between these portions of the drum and casing are sufficiently extended, that this film will prevent the liquid from following the drum in its rotation to an appreciable extent, and the roller bearing further reduce the friction of the parts and these combined friction reducing provisions cause the engine to run with a minimum amount of friction.

Having described my invention what I claim as new is:

1. A pump comprising a casing having an internal periphery circular at its top and bot tom portions with projecting peripheral lugs, said casing having inlet and outlet ports and a comparatively long bearing surface at its periphery between the ports, heads in the casing having grooves circular at their top and bottom portions, but eccentric to said casing with peripheral lugs and bolt holes, bolts passing through the lugs on the head and casing, a circular drum in the casing snugly fitting throughout its bottom peripheral area, the extended periphery at the bottom of the casing, but spaced from the top thereof, said drum having piston slots and pistons therein with ball bearings snugly fitting said slots in the heads, the slotsbeing constructed so that one of said pistons is positively held in contact with one portion of the casing when the pump is in operation; but slightly withdrawn from the opposite portion.

2. A pump comprising solid endcovers, each end cover having a hub portion and piston guiding groove, and a circumferential shoulder, a middle casing with inlet and outlet openings and having a circular portion ex- 4 casing having flanges with bolt holes therein,

and bolts to hold the end covers and middle casing together, and a circular piston drum with its periphery fitting a circular portion of the inner periphery of the middle casing.

3. A device of the character described comprising a casing having an internal periphery circular at its top and bottom portion said casing having inlet and outlet ports and heads with a hub opening and grooves therein circular at their top and bottom portions but eccentric to said casing said casing being provided with inlet and outlet openings, and flanged pipes extending downwardly there-7 from to serve as a base for said device, and

a circular portion extending between said openings, a circular drum having a ball bear-.

ing hub in said hub opening and also having I piston slots and pistons therein with ball bearings snugly fitting said head grooves the head grooves being so shaped that eachof said pistons in turn is positively held in contact' with the upper portion of the casing but slightly drawn from the bottom portion as the drum revolves whereby a film of liquid is formed between the drum and casing and most of the weight of said drum is borne by p the circular bottom portion of the casing to relieve the strain on the ball bearing hub.

In'testimony whereof I hereunto aflix my signature.

RODOLFO LUSSO. 

